Junior Backend Engineer | Java/Spring Boot | PostgreSQL | DevOps | Cryptography

I build real things. My public repositories documenting my journey from hobby projects to production systems.

• Backend Systems — REST APIs, WebSocket architecture, real-time communication
• Infrastructure — Docker, Linux, GitHub Actions, Cloudflare Workers
• Databases — PostgreSQL with PostGIS, geospatial optimization
• Cryptography — X25519 key exchange, AES-256-GCM, zero-knowledge protocols
• Full-Stack — When needed: React, Astro, TypeScript, Node.js

Currently at LogiCloud Kft. (Spring Boot, PostGIS, system integration). Graduating June 2026 with a BSc in Computer Science from University of Pécs.

I maintain many repos exploring different domains: DevOps automation, security research, infrastructure-as-code, API design, database optimization, and full-stack development.

Languages: Java 17+, TypeScript, Node.js, Kotlin, Bash
Frameworks: Spring Boot, React, Astro
Databases: PostgreSQL, PostGIS
Infrastructure: Docker, Linux, GitHub Actions, Cloudflare Workers
Specializations: REST APIs, WebSocket, cryptography, deployment automation

• Scaling backend systems without losing simplicity
• Security-first design patterns
• Remote work opportunities (Hungary-based, flexible timezone)

• GitHub: @bllbtnd
• Website: ballabotond.com
• CV: cv.ballabotond.com
• Location: Budapest, Hungary | Graduating June 2026

I don't do tutorial projects. Everything here solves a real problem or explores something I care about.